冷池减少森林砍伐对对流起始的影响
Cold Pools Reduce the Impacts of Deforestation on Convection Initiation
AI总结：
冷池部分抵消了人为驱动的陆面异质性对对流起始的影响。
摘要：
本文研究了冷池和陆面异质性对对流起始的个体和协同影响。通过理想化的大涡模拟，研究了亚马逊雨林上空深对流的形成过程。模拟测试了现实且均质的植被，以及现实但抑制的低层蒸发，从而消除冷池。通过追踪上升流确定对流起始位置。利用组织指数量化起始位置的聚集情况。在均质植被上，起始位置随机分布，有或无冷池，表明冷池对均质植被上的起始位置影响较小。在现实植被条件下，森林地区比砍伐地区更频繁地产生对流起始，这归因于有利的热力学条件。异质植被相比均质植被更有效地聚集起始位置和降水，而冷池通过向砍伐地区传播并引发对流，从而分散起始位置和降水。因此，冷池部分抵消了人为驱动的陆面异质性的影响。
英文摘要：
The individual and synergistic impacts of cold pools and land surface heterogeneity on convection initiation are investigated. Idealized large eddy simulations of deep convection over the Amazon rainforest are conducted. Simulations test realistic and homogenized vegetation, along with realistic and suppressed low-level evaporation which eliminates cold pools. Updrafts are tracked to determine convection initiation locations. The aggregation of initiation locations is quantified with an organization index. Initiation locations are randomly distributed over homogeneous vegetation, with or without cold pools, demonstrating that cold pools have minimal impacts on initiation locations over homogeneous vegetation. With realistic vegetation, convection initiation is more frequent over forested than deforested areas due to favorable thermodynamics. Heterogeneous vegetation effectively aggregates initiation locations and precipitation compared to homogeneous vegetation, whereas cold pools disaggregate initiation locations and precipitation by propagating into deforested regions and initiating convection. Thus, cold pools partially counteract the effects of anthropogenically driven land surface heterogeneity.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
